<template>
  <div>
    <input type="text" v-model="name">
  </div>
</template>

<script>
export default {
  data () {
    return {
      name:''
    }
  },
  watch:{
    name(newVal,oldVal){
      console.log(newVal,oldVal)
    }
  }
}
</script>

<style>

</style>